ICD-10-CM 2027 diagnosis code
K02.6Dental caries on smooth surface
K02.6 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About K02.6
K02.6 is the ICD-10-CM diagnosis code for dental caries on smooth surface. It belongs to category K02 (dental caries), block K00-K14 (diseases of oral cavity and salivary glands) and chapter 11 (diseases of the digestive system). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.
Within K02 (dental caries), K02.6 is specifically for dental caries on smooth surface. Related codes cover Arrested dental caries (K02.3), on pit and fissure surface (K02.5), dental root caries (K02.7) and unspecified (K02.9).
To report this condition, pick the subcode that matches the documentation: K02.61 (limited to enamel), K02.62 (penetrating into dentin) and K02.63 (penetrating into pulp).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under K02.6
Notes that apply from higher levels
Instructions written at a parent level also apply to K02.6.
› From K02 Dental caries
- caries of dentine
- dental cavities
- early childhood caries
- pre-eruptive caries
- recurrent caries (dentino enamel junction) (enamel) (to the pulp)
- tooth decay
Broader instructions also apply from Chapter 11: Diseases of the digestive system.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about K02.6
Is K02.6 billable?
- No. K02.6 is a header code. Report one of its more specific subcodes instead.